Loc. 11, Arroyo Guayule [Aurora Limestone]: Albian, Mexico
collected by Kellum 1953

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Echinoidea - Holectypoida - Holectypidae
Holectypus sp.
Echinoidea - Spatangoida - Hemiasteridae
Hemiaster ? calvani
Rhynchonellata - Terebratulida - Kingenidae
Kingena wacoensis
Cephalopoda - Nautilida - Nautilidae
Cymatoceras hilli (Shattuck 1903)
Gastropoda - Tylostomatidae
Tylostoma kentense
Bivalvia - Pectinida - Pectinidae
Pecten texanus Gabb 1861
synonym of Camptonectes virgatus
Pecten sp. Müller 1776
Bivalvia - Ostreida - Gryphaeidae
Gryphaea mucronata Gabb 1869
Bivalvia - Cardiida - Cardiidae
Cardium informal sp. A Linnaeus 1758
Protocardia texana
see common names

Geography
Country:Mexico State/province:Coahuila de Zaragoza
Coordinates: 26.4° North, 103.3° West (view map)
Paleocoordinates:25.3° North, 64.6° West
Geographic resolution:outcrop
Time
Period:Cretaceous Epoch:Early/Lower Cretaceous
Stage:Albian 10 m.y. bin:Cretaceous 4
Key time interval:Albian
Age range of interval:113.00000 - 100.50000 m.y. ago
Stratigraphy
Formation:Aurora Limestone
Stratigraphic resolution:bed
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Aurora Limestone, for which lithostratigraphic relationships are not discussed AGE: Albian, on the basis of biostratigraphic correlation to better dated Texan lithostratigraphic units. STRATIGRAPHIC POSITION: From Gryphaea mucronata zone; unknown position within the formation.
Lithology and environment
Primary lithology: lithified "limestone"
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Limestone. LITHIFICATION: Lithified, on the basis of figured specimens.
Environment:marine indet.
Taphonomy
Modes of preservation:body,mold/impression
Size of fossils:macrofossils
Collection methods and comments
Collection methods:surface (float),surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Museum repositories:UMMP
Collectors:Kellum Collection dates:1953
Collection method comments: COLLECTOR: Kellum, 1953. REPOSITORY: UMMP.
Taxonomic list comments:COVERAGE: Exhaustive for macrofossils. NOMENCLATURE: Authoritative publication, with antiquated nomenclature, but with species-resolution identifications.
Metadata
Database number:88631
Authorizer:A. Hendy Enterer:A. Hendy
Research group:marine invertebrate
Created:2009-04-16 21:36:16 Last modified:2013-11-25 13:37:23
Access level:the public Released:2009-04-16 21:36:16
Creative Commons license:CC BY
Reference information

Primary reference:
29733. L. B. Kellum. 1956. Cretaceous invertebrates of the Aurora Limestone. Papers of the Michigan Academy of Science, Arts, and Letters 41:205-231 [A. Hendy/A. Hendy]